Solving One-Step Equations

Addition

100

x + 4 = 25

What is 21

200

a + 10 = 13

What is 3

300

n + 8 = 14

What is 6

400

x + 36 = 100

What is 64

500

27 = c + 27

What is 0

Subtraction

100

x - 2 = 6

What is 8

200

d - 7 = 9

What is 16

300

k - 83  =121

What is 204

400

x - 327 = 665

What is 992

500

a - 163 = 392

What is 555

Multiplication

100

9x = 27

What is 3

200

7x = 63

What is 9

300

5e = 400

What is 80

400

11x = 275

What is 25

500

21y = 756

What is 36

Division

100

y/6 = 2

What is 12

200

x/4 = 14

What is 56

300

x/6 = 6

What is 36

400

28 = a/13

What is 364

500

80 = x/15

What is 1200

Decimals

100

m + 2.4 = 3.2

What is 0.8

200

x - (66.09) = 102.8

What is 168.89

300

5.6 = 0.8x

What is 7

400

c/0.29 = 5.5

What is 1.595

500

0.12 = y/0.12

What is 0.0144

Write and Solve

100

Janeen's mother is 79. She is 36 years older than Janeen. Write and solve an equations that can be used to find Janeen's age j.

j + 36 = 79

j=43 years old

200

Quentin bought 26 new tennis balls. If he now has a total of 67 tennis balls, how many did he start with? Write and solve an equation. 

t=tennis balls he started with

t + 26 = 67

t=41 tennis balls

300

Kelly earned $85 for babysitting. She has also earned money by doing chores. Altogether, she has earned $196. How much did she earn doing chores? Write and solve an equation.

c=money made doing chores

c + 85=196

c=$111

400

Antwaun waters his lawn 8 times per week. If he watered his lawn 72 times in all, write and solve an equation that could be used to find how many weeks he has been watering his lawn.

w=weeks watered lawn

8w=72

w=9 weeks

500

At a nursey, plants are half off their original price. The sales price of a potted plant is $23.75. Write and solve an equation that could be used to find the original price of the plant. 

c=original price of plant

c/2=23.75

c=$47.50